Okla. Stat. tit. 74, § 72

The Director of the Office of Management and Enterprise Services and the Warden of the State Reformatory are authorized and directed to furnish to the said Oklahoma Historical Society and associated organizations such monuments and markers of granite as may be desired and ordered or requisitioned for the purposes pursuant to the provisions of this section at prices not exceeding the cost of production and delivery, which includes: Quarrying, squaring, facing, lettering prescribed inscriptions, crating, and delivering to the railway or other carrier.